2026 Year-End Financial Close for Swiss SMEs: Start in August, Not January

Why August Is the Right Time to Start Your 2026 Year-End Close

Most Swiss SMEs treat the year-end financial close as a January problem. That is a costly mistake. By the time January arrives, accruals are messy, documents are missing, and your fiduciary or CFO is working under pressure. The businesses that close cleanly – and on time – start in August.

Under art. 958 para. 3 CO, the annual report must be prepared within six months of the end of the financial year. For a 31 December year-end, that means 30 June 2027. But “within the deadline” is not the same as “done well.” A structured August start gives you five months of controlled preparation rather than six weeks of crisis management.

This guide covers every major checkpoint for the 2026 close: accounting obligations, audit thresholds, VAT, provisions, inventory, pension accounting under Swiss GAAP FER 16, and the new federal default interest rate.

Step 1: Confirm Your Accounting Obligations Under the CO

Before anything else, confirm which accounting regime applies to your company. Art. 957 CO establishes the general accounting duty. However, art. 957 para. 2 CO provides that sole proprietorships and partnerships with annual turnover below CHF 500’000 may use simplified accounting – income/expense records and an asset/liability statement, rather than full double-entry bookkeeping.

If your company is subject to full double-entry bookkeeping, the accrual principle under art. 958b CO applies: revenues and expenses must be allocated to the period in which they are economically incurred, not when cash moves. August is the right moment to audit your accruals methodology for the full year.

Step 2: Determine Whether Swiss GAAP FER Applies

Swiss GAAP FER full-framework is mandatory when a company exceeds at least two of the following three thresholds in two consecutive years:

• Balance sheet total: CHF 10 million
• Annual net revenue: CHF 20 million
• Headcount: 50 FTE (annual average)

Below these thresholds, only the core FER framework (Framework + FER 1-6) is required. If you crossed the thresholds in both 2024 and 2025, full FER applies to your 2026 close. If you are borderline, run the numbers now – not in December.

Step 3: Review the 2025 Swiss GAAP FER 16 Revision

If your company has defined benefit pension obligations, flag this now. Swiss GAAP FER 16, which governs pension benefit obligations, was revised with the standard adopted on 2 December 2025. The revised FER 16 is mandatory for reporting periods beginning on or after 1 January 2027, though early application is permitted.

The revision introduces a two-step method for Swiss pension plans and clarifies the treatment of foreign plans. If your 2026 close involves significant pension liabilities, discuss with your actuary and auditor in August whether early application makes sense for comparability purposes. Waiting until December leaves no time for actuarial reports.

Our accounting and payments services include support for Swiss GAAP FER compliance across the close cycle.

Step 4: Know Your Audit Threshold

The type of audit your company requires has direct implications for your year-end timeline and workload.

Ordinary audit (ordentliche Revision) under art. 727 CO is mandatory when a company exceeds at least two of three thresholds in two consecutive years: balance sheet CHF 20 million; annual turnover CHF 40 million; 250 FTE. If you exceed these thresholds, your auditors will require significantly more documentation and earlier access to draft accounts.

Limited audit (eingeschränkte Revision) under art. 727a CO applies to most Swiss SMEs below the ordinary audit thresholds. Companies with no more than 10 full-time positions on annual average may opt out of the limited audit entirely, provided all shareholders consent.

Review your headcount and financial figures now. If you are approaching the ordinary audit threshold for the second consecutive year, inform your auditor immediately – they will need more lead time.

Step 5: Asset Valuation, Depreciation, and Hidden Reserves

Art. 960a CO governs asset valuation and depreciation. Assets must be valued at no more than their acquisition or production cost, net of necessary depreciation. Art. 960a para. 4 CO provides the statutory basis for additional value adjustments and depreciation beyond commercial necessity – the legal foundation for creating hidden reserves (stille Reserven) to secure the long-term prosperity of the enterprise.

August is the time to review your fixed asset register, assess useful lives, and decide whether additional depreciation is appropriate for 2026. Decisions made now can be reflected consistently through the second half of the year rather than as a last-minute adjustment in December.

Step 6: Inventory Valuation: CO Rule and Tax Practice

Under art. 960c CO, inventory must be valued at the lower of acquisition/production cost or net realisable value. This is the commercial law rule.

Separately, Swiss tax practice permits a flat one-third write-down of inventory value (“Warendrittel”, 33 1/3%). This is a tax practice – not a provision of the CO – and its application must be considered in the context of your cantonal tax situation and overall tax planning for 2026. If you have significant inventory, involve your tax adviser before the year-end count is finalised.

Step 7: Provisions Under Art. 960e CO

Provisions (Rückstellungen) are governed by art. 960e CO. Provisions must be recognised for obligations that exist at the balance sheet date, even if their amount or timing is uncertain. Common year-end provisions for Swiss SMEs include warranty obligations, pending litigation, restructuring costs, and untaken holidays.

The August review should identify all potential provision items. Waiting until December means rushed estimates and potential under-provisioning, which creates audit queries and restatement risk.

Step 8: VAT Reconciliation and the Planned 2028 Rate Change

The Swiss standard VAT rate is 8.1%, unchanged since 1 January 2024. Your 2026 close must reconcile VAT accounts at this rate.

Looking ahead: parliament has approved a planned increase to 8.5% effective 1 January 2028, intended to fund the 13th AHV pension. This is not yet law – it remains subject to a referendum on 29 November 2026. Do not adjust any 2026 figures for this rate. However, if your company has multi-year contracts or long-term pricing models, flag the potential change now so commercial teams can plan accordingly.

Quarterly VAT reconciliation should be current before you begin the year-end close. If Q1 or Q2 2026 VAT accounts have not been reviewed, do that in August.

Step 9: Update for the New Federal Default Interest Rate

The Swiss federal default interest rate (Verzugszins) was reduced from 4.5% to 4.0% effective 1 January 2026. If your company has overdue receivables, inter-company loans, or disputed payments, ensure that default interest calculations for 2026 use the correct 4.0% rate. Recalculate any provisions or interest accruals that were modelled on the prior rate.

Step 10: Build Your Close Timeline for August to December 2026

An actionable framework for the five months ahead:

• August: Confirm accounting regime and FER applicability; review FER 16 pension implications; engage auditors; start fixed asset review.
• September: Complete Q2 VAT reconciliation if outstanding; review provisions list; update default interest calculations; confirm inventory count date.
• October: Run mid-year management accounts; stress-test year-end projections; identify hidden reserve decisions.
• November: Pre-close review with your fiduciary or CFO; ensure all accruals per art. 958b CO are identified; finalise pension actuarial engagement.
• December: Physical inventory count; post final accruals and provisions; prepare draft balance sheet and P&L for auditor review.

Our business monitoring and controlling system is designed to keep Swiss SMEs on track through exactly this kind of structured close cycle – with real-time visibility rather than end-of-year surprises.

Under art. 699 CO, the ordinary general meeting must be held within six months of the financial year-end – by 30 June 2027 for a December year-end. The annual accounts must be finalised and approved before that date. Planning backward from that deadline, a December 31 year-end requires approved accounts no later than late May 2027, which means a clean close by February at the latest. That timeline is only realistic if preparation starts now.

Frequently Asked Questions

When does the ordinary audit obligation apply to a Swiss SME?

Under art. 727 CO, the ordinary audit (ordentliche Revision) is mandatory when a company exceeds at least two of three thresholds in two consecutive years: balance sheet total CHF 20 million, annual turnover CHF 40 million, or 250 FTE. If you crossed these thresholds in both 2024 and 2025, the ordinary audit applies to your 2026 annual accounts.

Can a Swiss SME opt out of the limited audit entirely?

Yes. Under art. 727a CO, companies with no more than 10 full-time positions on annual average may waive the limited audit (eingeschränkte Revision) provided all shareholders consent. This opt-out must be an active decision – it is not automatic – and should be formally documented.

What is the correct rate for Swiss federal default interest in 2026?

The Swiss federal default interest rate (Verzugszins) is 4.0% from 1 January 2026, reduced from 4.5%. Any default interest accruals, inter-company loan terms, or provision calculations covering 2026 periods should use the 4.0% rate.

Is the one-third inventory write-down (“Warendrittel”) a legal right under the CO?

No. The flat 33 1/3% inventory write-down is a Swiss tax practice, not a provision of the Code of Obligations. The CO rule for inventory is art. 960c CO: valuation at the lower of cost or net realisable value. The one-third deduction is applied in the tax context and its availability should be confirmed with your tax adviser based on your cantonal situation.

What does the Swiss GAAP FER 16 revision mean for my 2026 close?

The revised Swiss GAAP FER 16, adopted 2 December 2025, is mandatory for reporting periods beginning on or after 1 January 2027. Early application is permitted. If your company has defined benefit pension obligations and applies the full Swiss GAAP FER framework, you should discuss with your actuary and auditor whether early adoption in 2026 is appropriate. The revision clarifies the treatment of Swiss and foreign pension plans using a two-step method.

After the Close: Loss Carryforwards and the Tax-Return Timeline

The close produces the figure; the tax return decides what you pay on it, and two rules there reward planning before you file. First, a legal person can offset losses from the previous seven financial years against current profit (Art. 67 DBG), applied earliest-loss-first. Unused losses expire after the seventh year, so a loss from an early year can lapse unclaimed if you do not track it. A decided extension to ten years takes effect by 1 January 2028 at the latest, but the seven-year rule governs your 2026 close. Losses used to absorb a restructuring (Sanierung) can reach back further without the time limit.

• Carryforward: seven years, earliest-loss-first, unused balances expire (Art. 67 DBG).
• Coming change: extension to ten years in force by 1 January 2028 at the latest.
• Filing deadline: cantonal, not federal, and most cantons grant an extension on request.

Track the loss balance by year so nothing lapses, and map your canton’s return deadline now, filing for the extension early rather than in the final week. For the return and loss planning see our corporate tax and VAT compliance service; to model the profit the close will produce, our budgeting and forecasting service.

How many years can a Swiss company carry forward tax losses?

Seven years for legal persons (Art. 67 DBG), offset against profit earliest-loss-first; unused losses expire after the seventh year. A decided extension to ten years takes effect by 1 January 2028 at the latest, and losses absorbing a restructuring (Sanierung) are not time-limited. The seven-year rule governs the 2026 close.